| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hbase.chaos.actions; |
| |
| import java.util.List; |
| |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HRegionInfo; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey; |
| import org.apache.hadoop.hbase.client.Admin; |
| |
| /** |
| * Action that tries to flush a random region of a table. |
| */ |
| public class FlushRandomRegionOfTableAction extends Action { |
| private final long sleepTime; |
| private final TableName tableName; |
| |
| public FlushRandomRegionOfTableAction(TableName tableName) { |
| this (-1, tableName); |
| } |
| |
| public FlushRandomRegionOfTableAction(int sleepTime, TableName tableName) { |
| this.sleepTime = sleepTime; |
| this.tableName = tableName; |
| } |
| |
| @Override |
| public void perform() throws Exception { |
| HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility(); |
| Admin admin = util.getHBaseAdmin(); |
| |
| LOG.info("Performing action: Flush random region of table " + tableName); |
| List<HRegionInfo> regions = admin.getTableRegions(tableName); |
| if (regions == null || regions.isEmpty()) { |
| LOG.info("Table " + tableName + " doesn't have regions to flush"); |
| return; |
| } |
| |
| HRegionInfo region = PolicyBasedChaosMonkey.selectRandomItem( |
| regions.toArray(new HRegionInfo[regions.size()])); |
| LOG.debug("Flushing region " + region.getRegionNameAsString()); |
| try { |
| admin.flushRegion(region.getRegionName()); |
| } catch (Exception ex) { |
| LOG.warn("Flush failed, might be caused by other chaos: " + ex.getMessage()); |
| } |
| if (sleepTime > 0) { |
| Thread.sleep(sleepTime); |
| } |
| } |
| } |